Too soon to share the good news?

We're going to my in-laws' for Christmas dinner this evening. I'm 4 weeks and 6 days, got my BFP last Thursday! I kind of really want to spill the beans, but my husband and best friend both think I should wait. They're worried about if I have a miscarriage & think I'll regret telling people. What do you guys think? Anyone regret telling family too soon?

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